Conventional battery electrodes exhibit high tortuosity, impeding ion transport. Here, authors report the use of a temporally shaped ultraviolet femtosecond laser to create an array of high-density through-holes, reducing tortuosity in thick electrodes with low material loss (> 1%) in up to 280 μm-thick LiFePO4 electrodes, improving gravimetric energy density and power capabilities.
- Junrui Wu
- Huixin Guo
- Qian Cheng
